| Iraklis L | 35.5 | 2009 | Onar |
| Iravati | 42.37 | 1998 | Oceanco |
| Irelanda | 31.95 | 1996 | Alloy Yachts |
| Irene | 35.97 | 1907 | Knight & Carver |
| Irina Vu | 34.53 | 2012 | Sunseeker |
| Iris Blue | 55 | 2024 | Heesen Yachts |
| Irisha | 51 | 2018 | Heesen Yachts |
| Iron Blonde | 60.15 | 2012 | Trinity Yachts |
| Iron Gryphon | 29.9 | 2019 | Riva S.p.A. |
| Iron Gryphon | 33.53 | 2023 | Riva S.p.A. |
| Iron Lady | 32.3 | 2005 | Broward Marine |
| Ironman | 42 | 2018 | Benetti SpA |
| Iryna | 66.2 | 2024 | Benetti SpA |
| Iryna | 35.17 | 2019 | Azimut Yachts |
| Iryna II | 50 | 2021 | Benetti SpA |
| Is A Rose | 49.8 | 2003 | Perini Navi |
| Isabell Princess of the Sea | 63.77 | 1990 | Codecasa S.p.A. |
| Isabella | 31.7 | 1989 | Broward Marine |
| Ishtar III | 29.1 | 2016 | Sanlorenzo |
| Iskandar | 31.82 | 1976 | Admiral |
| Island Cowboy | 35.9 | 2021 | Ocean Alexander |
| Island Girl | 34.04 | 2000 | Westport Yachts |
| Island Heiress | 44.2 | 1995 | Cheoy Lee |
| Island Seeker | 30.48 | 1996 | Azimut Yachts |
| Island Time | 33.5 | 1991 | Broward Marine |
| Island Vibe | 30.48 | 1997 | Broward Marine |
| Island Voyager | 28.65 | 1979 | Broward Marine |
| Islander II | 33.45 | 2002 | Baglietto S.p.A. |
| Isotta | 30.12 | 2023 | Ferretti Yachts |
| Isra 108 | 32.91 | 2008 | Sunseeker |
| Istanbul 1453 | 33 | 2007 | Mengi Yay Yachts |
| Istranka | 45.65 | 1959 | 3.MAJ d.d |
| Istros | 42.06 | 1954 | Amsterdamsche Scheepwerf G. de Vries Lentsch Jr |
| It's Noon Somewhere | 28.13 | 2006 | Sunseeker |
| Itaca Club | 35.46 | 2006 | Azimut Yachts |
| Italcraft 105 #4 | 32 | 2022 | Italcraft |
| Itasca | 53.6 | 1961 | J. & K. Smits Scheepswerven N.V. |
| Ithaka | 36.9 | 2016 | Benetti SpA |
| Ithaka | 29.11 | 2020 | Princess Yachts |
| Itoto | 61 | 1987 | Dauphin Yachts |
| Iva | 29.2 | 2014 | Ferretti Yachts |
| Ivanhoe | 30.33 | 1907 | Newbert & Wallace |
| Ivar | 29.2 | 2016 | Black Sea Yachts Shipyard |
| Ivory Lady | 33.07 | 1988 | Cheoy Lee |
| Ixia | 34.75 | 1990 | Cantieri di Pisa |
| J | 27.6 | 2023 | Sanlorenzo |
| J & Li | 38.4 | 2011 | Sunseeker |
| J7 Explorer | 120 | 2022 | PT Bahtera Bahari shipyard |
| JAS | 66 | 2025 | Admiral |
| JFF | 33.5 | 2001 | Overmarine Group SPA |
